I would have to say black, because it just fits with most creepy books. Sorry if you can't figure out an explanation.
the answers are darkness and light
Answer:
Classical conditioning.
Explanation:
Classical conditioning first studied and illustrated by Ivan Pavlov(Russian Psychologist) that arises learning when a conditioned stimulus is combined with an unconditioned stimulus. <em>It exemplifies the learning through association which is an outcome of pairing or linking of two stimuli in order to produce a new learned response in an individual. The given passage reflects this process(classical conditioning) as Juan affiliates the song to his childhood days that results in a warm emotional response from him. Thus, it displays classical conditioning. </em>
